Cosmos has added extra flights to Alicante, Tenerife and Arrecife to its winter 1999/2000 Flights programme.
Commercial director Stuart Jackson said the company was anticipating extra demand because of the millenniumcelebrations.
Prices lead in at ú89 for seven-night departures in January from Gatwick to Alicante. Children up to 16 years travelling with two adults qualify for a reduction of ú20 off the adult price.